Justification:
Listed as Endangered as the species is entirely confined to Great and Little Nicobar Islands (ca. 1,000 km²) and the extent of occurrence is approximately 1,674 km², where it is subject to a continuing decline in quality and area of available habitat.

This species occurs only on the Indian islands of Great Nicobar and Little Nicobar (Helgen 2005). The species is thought be found from sea level to the 640 m, which is the highest point on the islands.